221500520

素因数分解:

$2^3\times 5^1\times {\mathrm{1123}}^1\times {\mathrm{4931}}^1$

素因数の和:6065

約数の個数: 32

約数和(自身を含む): 498921120

約数和(自身を除く): 277420600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1123, 2246, 4492, 4931, 5615, 8984, 9862, 11230, 19724, 22460, 24655, 39448, 44920, 49310, 98620, 197240, 5537513, 11075026, 22150052, 27687565, 44300104, 55375130, 110750260, 221500520]

約数ペア:

[(1, 221500520), (2, 110750260), (4, 55375130), (5, 44300104), (8, 27687565), (10, 22150052), (20, 11075026), (40, 5537513), (1123, 197240), (2246, 98620), (4492, 49310), (4931, 44920), (5615, 39448), (8984, 24655), (9862, 22460), (11230, 19724)]